本文選題：航空發(fā)動機(jī) + Altium�。� 參考：《中國民航大學(xué)》2016年碩士論文

【摘要】：航空發(fā)動機(jī)的正常運(yùn)轉(zhuǎn)決定著飛機(jī)飛行的安全,為了監(jiān)測航空發(fā)動機(jī)的運(yùn)行狀態(tài),設(shè)計(jì)并研究一套針對雙轉(zhuǎn)子渦輪風(fēng)扇發(fā)動機(jī)的振動信號監(jiān)測系統(tǒng)。硬件系統(tǒng)設(shè)計(jì)與開發(fā)主要通過Altium Designer平臺實(shí)現(xiàn),系統(tǒng)電路的電路設(shè)計(jì)、印制電路板的設(shè)計(jì)均在此平臺環(huán)境下設(shè)計(jì)完成。該監(jiān)測系統(tǒng)包括輸入、運(yùn)算和輸出三個模塊。輸入模塊由振動通道、過程量通道、轉(zhuǎn)速通道、數(shù)字輸入和輸出通道構(gòu)成,各通道均采用內(nèi)部多通道設(shè)計(jì),用于對輸入信號進(jìn)行保護(hù)、放大、內(nèi)部通道選擇等信號調(diào)理功能。運(yùn)算模塊主要由模/數(shù)轉(zhuǎn)換器用于將經(jīng)過調(diào)理電路的模擬信號轉(zhuǎn)換為數(shù)字信號,模擬信號分為兩種,分別為經(jīng)過低通濾波的直流信號和經(jīng)過高通濾波的頻率信號,兩種不同的信號將分別輸入至兩個模/數(shù)轉(zhuǎn)換器進(jìn)行轉(zhuǎn)換。輸出模塊用于將系統(tǒng)獲取的信號進(jìn)行數(shù)字化輸出,包括控制電路輸出端口,電源端口以及其相關(guān)電路連接。通過對設(shè)計(jì)電路的仿真和搭建了單轉(zhuǎn)子實(shí)驗(yàn)平臺,并對硬件系統(tǒng)的輸入和運(yùn)算模塊進(jìn)行功能實(shí)驗(yàn),結(jié)果表明硬件系統(tǒng)可以對信號進(jìn)行信號調(diào)理,實(shí)現(xiàn)了設(shè)計(jì)功能。所研究硬件系統(tǒng)可靠性高,各信號通道均采用多通道設(shè)計(jì),使得在傳感器損壞或電路損壞的情況下系統(tǒng)可正常運(yùn)行。系統(tǒng)適用性強(qiáng),系統(tǒng)信號調(diào)理電路可以與大部分傳感器對接使用。硬件系統(tǒng)采用集成化設(shè)計(jì),將信號輸入與運(yùn)算模塊集成在一張印制電路板上。本文介紹了各通道處理電路的設(shè)計(jì)和仿真過程、A/D轉(zhuǎn)換器的選擇方式和連接原理、印制電路板的設(shè)計(jì)過程以及對系統(tǒng)的實(shí)驗(yàn)和數(shù)據(jù)獲得,最后得出結(jié)論。
[Abstract]:The normal operation of the aeroengine determines the flight safety of the aircraft. In order to monitor the running state of the aeroengine, a vibration signal monitoring system for the twin-rotor turbofan engine is designed and studied. The design and development of hardware system is mainly realized by Altium Designer platform. The circuit design of the system circuit and the design of the printed circuit board are all completed in this platform. The monitoring system includes three modules: input, operation and output. The input module is composed of vibration channel, process channel, rotational speed channel, digital input channel and output channel. Each channel is designed with internal multi-channel, which is used to protect input signal, amplify, select internal channel and so on. The operation module is mainly used by A / D converter to convert analog signal from conditioning circuit to digital signal. The analog signal is divided into two kinds, namely, the low-pass filtered DC signal and the high-pass filtered frequency signal. Two different signals will be input to two A / D converters for conversion. The output module is used to digitally output the signal acquired by the system, including the output port of the control circuit, the power port and the related circuit connection. Through the simulation of the design circuit and the establishment of a single rotor experimental platform, the functional experiments of the input and operation modules of the hardware system are carried out. The results show that the hardware system can adjust the signal and realize the design function. The reliability of the hardware system studied is high, and the multi-channel design is adopted in each signal channel, which makes the system work normally when the sensor is damaged or the circuit is damaged. The system has strong applicability, and the system signal conditioning circuit can be used to connect with most sensors. The hardware system adopts integrated design and integrates signal input and operation module on a printed circuit board. This paper introduces the design and simulation of each channel processing circuit. The selection and connection principle of the A / D converter, the design process of the printed circuit board, the experiment of the system and the data acquisition are introduced. Finally, the conclusion is drawn.
【學(xué)位授予單位】：中國民航大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2016
【分類號】：V263.6

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